Theoretical Underpinnings of a Model to Reduce Polypharmacy and Its Negative Health Effects: Introducing the Team Approach to Polypharmacy Evaluation and Reduction (TAPER).

We discuss how TAPER maps to address the specific patient-level, provider-level, and system-level barriers to deprescribing and aligns with three commonly used models and frameworks in medicine (the chronic care model, minimally disruptive medicine, the cumulative complexity model). We also describe how TAPER maps onto primary care principles, ultimately providing a description of the development of TAPER and a conceptualisation of the potential mechanisms by which TAPER reduces polypharmacy and its associated harms.